<?php
/**
 * 主流搜索引擎URL推送API适配器
 * 包含百度、必应、谷歌、360、搜狗的推送接口
 */

class SearchEnginePushAPI {
    
    /**
     * 百度URL推送
     * API文档：https://ziyuan.baidu.com/linksubmit/url
     */
    public static function push_to_baidu($urls, $site, $token) {
        $api_url = "http://data.zz.baidu.com/urls?site={$site}&token={$token}";
        
        $ch = curl_init();
        $options = array(
            CURLOPT_URL => $api_url,
            CURLOPT_POST => true,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_POSTFIELDS => implode("\n", $urls),
            CURLOPT_HTTPHEADER => array('Content-Type: text/plain'),
            CURLOPT_TIMEOUT => 30,
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => false
        );
        curl_setopt_array($ch, $options);
        
        $result = curl_exec($ch);
        $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        
        return array(
            'engine' => 'baidu',
            'status' => $http_code,
            'result' => json_decode($result, true),
            'raw_result' => $result
        );
    }
    
    /**
     * 必应URL推送 (使用IndexNow协议)
     * API文档：https://www.bing.com/indexnow
     */
    public static function push_to_bing($urls, $site, $token) {
        // 使用IndexNow协议
        $api_url = "https://www.bing.com/indexnow";
        
        $data = array(
            'host' => str_replace(array('http://', 'https://'), '', $site),
            'key' => $token,
            'keyLocation' => "https://{$site}/{$token}.txt",
            'urlList' => $urls
        );
        
        $ch = curl_init();
        $options = array(
            CURLOPT_URL => $api_url,
            CURLOPT_POST => true,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_POSTFIELDS => json_encode($data),
            CURLOPT_HTTPHEADER => array('Content-Type: application/json'),
            CURLOPT_TIMEOUT => 30,
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => false
        );
        curl_setopt_array($ch, $options);
        
        $result = curl_exec($ch);
        $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        
        return array(
            'engine' => 'bing',
            'status' => $http_code,
            'result' => $result,
            'raw_result' => $result
        );
    }
    
    /**
     * 必应Webmaster API推送
     * 备用方案：使用Bing Webmaster API
     */
    public static function push_to_bing_webmaster($urls, $site, $api_key) {
        $site_url = "https://" . str_replace(array('http://', 'https://'), '', $site);
        $api_url = "https://ssl.bing.com/webmaster/api.svc/json/SubmitUrlbatch?apikey={$api_key}";
        
        $data = array(
            'siteUrl' => $site_url,
            'urlList' => $urls
        );
        
        $ch = curl_init();
        $options = array(
            CURLOPT_URL => $api_url,
            CURLOPT_POST => true,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_POSTFIELDS => json_encode($data),
            CURLOPT_HTTPHEADER => array('Content-Type: application/json'),
            CURLOPT_TIMEOUT => 30,
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => false
        );
        curl_setopt_array($ch, $options);
        
        $result = curl_exec($ch);
        $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        
        return array(
            'engine' => 'bing_webmaster',
            'status' => $http_code,
            'result' => json_decode($result, true),
            'raw_result' => $result
        );
    }
    
    /**
     * 谷歌Indexing API推送
     * API文档：https://developers.google.com/search/apis/indexing-api/v3
     * 需要Google Cloud服务账号密钥
     */
    public static function push_to_google($urls, $site, $service_account_key) {
        // 注意：Google需要OAuth2.0认证，这里简化处理
        // 实际使用时需要完整的Google API客户端库
        
        $access_token = self::get_google_access_token($service_account_key);
        if (!$access_token) {
            return array('error' => 'Failed to get Google access token');
        }
        
        $results = array();
        
        foreach ($urls as $url) {
            $api_url = "https://indexing.googleapis.com/v3/urlNotifications:publish";
            
            $data = array(
                'url' => $url,
                'type' => 'URL_UPDATED'
            );
            
            $ch = curl_init();
            $options = array(
                CURLOPT_URL => $api_url,
                CURLOPT_POST => true,
                CURLOPT_RETURNTRANSFER => true,
                CURLOPT_POSTFIELDS => json_encode($data),
                CURLOPT_HTTPHEADER => array(
                    'Content-Type: application/json',
                    'Authorization: Bearer ' . $access_token
                ),
                CURLOPT_TIMEOUT => 30,
                CURLOPT_SSL_VERIFYPEER => false,
                CURLOPT_SSL_VERIFYHOST => false
            );
            curl_setopt_array($ch, $options);
            
            $result = curl_exec($ch);
            $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
            curl_close($ch);
            
            $results[] = array(
                'url' => $url,
                'status' => $http_code,
                'result' => json_decode($result, true)
            );
        }
        
        return array(
            'engine' => 'google',
            'results' => $results
        );
    }

    /**
     * 字节（今日头条）- 使用 IndexNow 作为通用提交协议
     * 说明：若字节官方开放推送端点，可在此替换为官方接口
     */
    public static function push_to_bytedance($urls, $site, $token) {
        // 使用通用 IndexNow 端点，部分搜索引擎会抓取
        $api_url = "https://api.indexnow.org/indexnow";
        $data = array(
            'host' => str_replace(array('http://', 'https://'), '', $site),
            'key' => $token,
            'keyLocation' => "https://{$site}/{$token}.txt",
            'urlList' => $urls
        );
        $ch = curl_init();
        $options = array(
            CURLOPT_URL => $api_url,
            CURLOPT_POST => true,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_POSTFIELDS => json_encode($data),
            CURLOPT_HTTPHEADER => array('Content-Type: application/json'),
            CURLOPT_TIMEOUT => 30,
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => false
        );
        curl_setopt_array($ch, $options);
        $result = curl_exec($ch);
        $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        return array(
            'engine' => 'bytedance',
            'status' => $http_code,
            'result' => $result,
            'raw_result' => $result
        );
    }
    
    /**
     * 360搜索URL推送
     * 360站长平台：https://zhanzhang.so.com
     */
    public static function push_to_360($urls, $site, $token) {
        $api_url = "https://zhanzhang.so.com/index/links/addLinks";
        
        $data = array(
            'site' => $site,
            'token' => $token,
            'urls' => $urls
        );
        
        $ch = curl_init();
        $options = array(
            CURLOPT_URL => $api_url,
            CURLOPT_POST => true,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_POSTFIELDS => http_build_query($data),
            CURLOPT_HTTPHEADER => array('Content-Type: application/x-www-form-urlencoded'),
            CURLOPT_TIMEOUT => 30,
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => false
        );
        curl_setopt_array($ch, $options);
        
        $result = curl_exec($ch);
        $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        
        return array(
            'engine' => '360',
            'status' => $http_code,
            'result' => json_decode($result, true),
            'raw_result' => $result
        );
    }
    
    /**
     * 搜狗URL推送
     * 搜狗站长平台：https://zhanzhang.sogou.com
     */
    public static function push_to_sogou($urls, $site, $token) {
        $api_url = "http://fankui.help.sogou.com/index.php/web/web/addShouLu";
        
        $data = array(
            'token' => $token,
            'url' => implode("\n", $urls)
        );
        
        $ch = curl_init();
        $options = array(
            CURLOPT_URL => $api_url,
            CURLOPT_POST => true,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_POSTFIELDS => http_build_query($data),
            CURLOPT_HTTPHEADER => array('Content-Type: application/x-www-form-urlencoded'),
            CURLOPT_TIMEOUT => 30,
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => false,
            CURLOPT_REFERER => $site
        );
        curl_setopt_array($ch, $options);
        
        $result = curl_exec($ch);
        $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        
        return array(
            'engine' => 'sogou',
            'status' => $http_code,
            'result' => json_decode($result, true),
            'raw_result' => $result
        );
    }
    
    /**
     * 神马搜索URL推送
     * 神马站长平台：https://zhanzhang.sm.cn
     */
    public static function push_to_shenma($urls, $site, $token) {
        $api_url = "https://data.zhanzhang.sm.cn/push";
        
        $data = array(
            'site' => $site,
            'user_name' => $token,
            'urls' => implode("\n", $urls)
        );
        
        $ch = curl_init();
        $options = array(
            CURLOPT_URL => $api_url,
            CURLOPT_POST => true,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_POSTFIELDS => http_build_query($data),
            CURLOPT_HTTPHEADER => array('Content-Type: application/x-www-form-urlencoded'),
            CURLOPT_TIMEOUT => 30,
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => false
        );
        curl_setopt_array($ch, $options);
        
        $result = curl_exec($ch);
        $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        
        return array(
            'engine' => 'shenma',
            'status' => $http_code,
            'result' => json_decode($result, true),
            'raw_result' => $result
        );
    }
    
    /**
     * 统一推送接口
     */
    public static function push_urls($urls, $engine_configs) {
        $results = array();
        
        foreach ($engine_configs as $engine => $config) {
            if (!isset($config['enabled']) || !$config['enabled'] || empty($config['token'])) {
                continue;
            }
            
            $site = $config['site'];
            $token = $config['token'];
            
            switch ($engine) {
                case 'baidu':
                    $results[$engine] = self::push_to_baidu($urls, $site, $token);
                    break;
                case 'bing':
                    $results[$engine] = self::push_to_bing($urls, $site, $token);
                    break;
                case 'google':
                    $results[$engine] = self::push_to_google($urls, $site, $token);
                    break;
                case '360':
                    $results[$engine] = self::push_to_360($urls, $site, $token);
                    break;
                case 'sogou':
                    $results[$engine] = self::push_to_sogou($urls, $site, $token);
                    break;
                case 'bytedance':
                    $results[$engine] = self::push_to_bytedance($urls, $site, $token);
                    break;
            }
        }
        
        return $results;
    }
    
    /**
     * 获取Google访问令牌（简化版）
     */
    private static function get_google_access_token($service_account_key) {
        // 这里应该实现完整的Google OAuth2.0流程
        // 简化处理，实际使用时需要Google API客户端库
        return false;
    }
    
    /**
     * 获取各搜索引擎的token申请地址
     */
    public static function get_token_urls() {
        return array(
            'baidu' => array(
                'name' => '百度站长平台',
                'url' => 'https://ziyuan.baidu.com/linksubmit/index',
                'description' => '登录百度站长平台，在"链接提交"中获取token'
            ),
            'bing' => array(
                'name' => '必应站长工具',
                'url' => 'https://www.bing.com/webmasters/about',
                'description' => '登录必应站长工具，获取IndexNow密钥或API密钥'
            ),
            'google' => array(
                'name' => 'Google Search Console',
                'url' => 'https://search.google.com/search-console',
                'description' => '需要Google Cloud服务账号和Indexing API权限'
            ),
            '360' => array(
                'name' => '360站长平台',
                'url' => 'https://zhanzhang.so.com',
                'description' => '登录360站长平台，在"链接提交"中获取token'
            ),
            'sogou' => array(
                'name' => '搜狗站长平台',
                'url' => 'https://zhanzhang.sogou.com',
                'description' => '登录搜狗站长平台，在"URL提交"中获取token'
            ),
            'shenma' => array(
                'name' => '神马站长平台',
                'url' => 'https://zhanzhang.sm.cn',
                'description' => '登录神马站长平台，在"URL提交"中获取token'
            )
        );
    }
}